TY  - RPRT
TI  - Vertical cross sections of the Ionosphere across the geomagnetic equator 
AU  - Wright, J W
PY  - 1962
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 138
DO  - 10.6028/NBS.TN.138
ER  -